Chemical fire-extinguisher



No. 750,566. PATENTED JAN. 26, 1904.

. A. G. BADGER.

CHEMICAL FIRE BXTINGUISHER. APPLIOATION FILED MAR. 14. 1903.

Nb MODEL.

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UNITED STATES Patented January 26, 1904.

PAT NT OFFICE.

CHEMICAL FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 750,566, dated January26, 1904.

Application filed March 14, 1903. Serial No. 147,720. (No model.)

To all whom, it may concern:

Be it known that I, ARTHUR C. BADGER, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Chemical Fire-EX- tinguishers, of which the following isa specification.

This invention relates to chemical fire-extinguishers; and its object isto enable the extinguisher to be handled roughly or moved about when notin use Without causing chemical action or loss of any of the contents.To this end in the preferred embodiment of the invention hereinafterdescribedI employ valve devices operated by the same stem or othervalve-operating mechanism for closing both the inner and the outerreceptacles when the apparatus is not in use.

The accompanying drawing represents a vertical sectional view, partly inelevation, showing a fire-extinguisher constructed according to myinvention.

In the drawing, 1 is an outer receptacle of the usual form containing aliquid 2 and having a cage 3 depending from its neck for holding theinner receptacle or bottle 4, which contains the other liquid 5,theobject being to unite these liquids when the extinguisher is invertedand create a pressure within the outer vessel, as usual. The cage 3 hasa flange or abutment 6 at its lower end, between which and the bottle 4is interposed a conical spring 7 for a purpose hereinafter described.

8 is a removable cap or cover screwed onto the neck of the outer vesselor canister 1 and to which is screwed internally a hollow casing9,formed with a valve-seat 10, surrounding an opening 11. The interiorspace of the cas ing 9 above the Valve-seat forms a chamber 12, fromwhich leads an outlet-duct 43, with which the discharge-hose isconnected. 'To the lower end of the casing 9 is screwed an adjustableskeleton cage 13, whose lower end abuts against the breast of the bottle4 and confines the latter against endwise movement. It will be seen thatthe parts 9 and 13 are withdrawn by the removal of the cover 8, leavingthe bottle free to be inserted in or removed from the cage 3.

14 is a valve stem or spindle adjustable with respect to the cover 8 bymeans of complemental screw threads at 15 and passing through a suitablestuffing-box 16. The stem is provided at its upper end with a hand-wheel17 for rotating it, and within the chamber 12 it is provided with avalve 18, cooperating with the valve-seat 10. At its lower end the stemcarries a stopper or valve 19 for controlling the mouth of the bottle 4.

When the extinguisher is not in use, the stem 14 is screwed inwardlyuntil the valves 18 19 close the valve-opening 11 and the mouthpiece ofthe bottle, respectively, the spring 7 allowing the upper valve 18 toseat after the lower valve 19 is already seated. The breast of bottle 4moves away from the lower end of cage 13 a slight distance when thevalves are seated. When the parts are thus disposed, all meeting of theliquids is prevented and communication between the bottle 4 or theinterior of the canister and the chamber 12 or the discharge-outlet iseffectually prevented. The extinguisher may therefore be subjected toagitation or even inverted with impunity. The adoption of the valve 18avoids the necessity for employing any other kind of a valve forcontrolling the outlet 43 or the discharge hose. When the extinguisheris to be used, the stem 14 is merely screwed outwardly and theextinguisher inverted, whereupon the two liquids meet and create apressure, as usual.

I claim 1. In a fire-extinguisher, a container or can' ister having anoutlet, an inner receptacle adapted to discharge into said canister, anadjustable stem having rigid valves controlling said outlet and themouth of said receptacle respectively, and yielding means permitting onevalve to seat after the other.

2. In a fire-extinguisher, a container or canister, a valve-chambertherefor having an inlet from said canister surrounded by a valveseatand having also a discharge-outlet, an inner receptacle adapted todischarge into said canister, an adjustable stem having a rigid valve insaid valve-chamber cooperating with the valve-seat thereof and a secondrigid valve cooperating with the mouth of said inner receptacle, andyielding means permitting one mouth and the passage between saidcanister valve to seat after the other. and outlet-chamber. I0

3. In a fire-extinguisher, a canister having In testimony whereof I haveafiixed my sigabottle-cage, an outlet-chamber provided with nature inpresence of two Witnesses.

5 a discharge-outlet, a bottle mounted in said ARTHUR C. BADGER.

cage, a spring interposed between the bottle Witnesses: and cage and astem having positively-seating A. C. RATIGAN,

valves for controlling respectively the bottle- R. E. BULLOCK.

